FAQS

What plastic business operations does Suke primarily involve in?

Suke company is an integrated enterprise combining industrial manufacturing and trading services.

We are currently as the authorized distributor of  brand : SABIC, COVESTRO, CHIMEI, FORMASA, SINOPAC.

Leveraging years of extensive experience in the material trading industry, we have established a research and development team led by materials science PhDs from universities of Science & Engineering.

Currently, our technical expertise spans multiple specialized areas, including color matching, high flowability, high toughness, high/low-temperature resistance, weather resistance, chemical resistance, flame retardancy, medical-grade, and food-contact-grade modifications.

Can you recommend food-contact grade PA66 materials?

Yes, we can. Depending on your application, here are several widely accepted options:

  • BASF Ultramid A3EG3
  • DuPont Zytel 70G33L NV010

There are also many other food-contact PA66 grades available. Please contact us with your specific requirements, and we’ll match the most suitable option.

Do you provide technical support for injection molding optimization with your materials?

Absolutely. Our technical team has extensive experience in injection molding and end-product applications. We provide assistance with process parameters, mold design suggestions, and troubleshooting.

What are the main fields your customers are involved in?

Our customers are primarily manufacturers in industries such as electrical appliances, medical equipment, sporting equipment, auto parts, toys, and related fields.

Can you suggest some matte grade ABS model?ers are involved in?

EASTECH M4 is a super matte ABS grade with a gloss level of 10 GU (measured at 60°) and a melt flow rate (MFR) of 9 g/10min.

EASTECH M4 ABS:
*Gloss Level (60°): 10 GU (Super Matte)
*Melt Flow Rate (MFR): 9 g/10min

Does Suke Plastics accept custom compounding or color matching orders from competing traders or suppliers?

No, we do not.

Suke Plastics focuses exclusively on end-users and certified manufacturers. We do not sell to other traders or accept orders from industry competitors to avoid market conflicts and ensure exclusivity and service quality for our customers.

Are there BPA-free polycarbonate (PC) materials suitable for food contact applications?

Strictly speaking, there is no such thing as BPA-free polycarbonate (PC). Polycarbonate is synthesized from Bisphenol A (BPA), and while the polymerized material is generally considered safe, trace amounts of unreacted BPA may migrate under extreme conditions such as high temperatures or strong alkaline environments.

For applications that require BPA-free and food-contact-safe materials, we recommend considering Eastman TRITAN™ or food-grade PETG as alternatives. However, TRITAN™ can be cost-prohibitive, is not always readily available, and is prone to counterfeit substitutes in the market.

As a cost-effective and reliable alternative, we recommend our PETG HG1701, which is certified for food contact and offers excellent chemical resistance—making it an ideal solution for various food packaging and container applications.

Can you provide REACH, RoHS, or FDA certifications for your materials?

Yes. Most of our materials come with full compliance documentation, including RoHS, REACH, UL, and FDA where applicable. Please specify your certification needs when placing your inquiry.

What’s the typical lead time for customized materials or color-matched orders?

For standard grades: 1–3 working days.

For color-matching or modified materials: 5–10 working days depending on complexity and volume.

What additives do you typically use for plastic modification?

In plastic modification, we use a variety of functional additives depending on the desired property enhancement. Here are some commonly used types and examples:

PurposeAdditive TypeCommon Additives
Improve flame retardancyFlame retardantsBDP (Bisphenol A bisphosphate), DOA (Dioctyl adipate)
Enhance melt indexLubricantsPETS (Pentaerythritol tetrastearate)
Increase tensile strengthFiber reinforcementCarbon fiber, glass fiber
Boost impact resistanceCore-shell impact modifiersMBS, ACR
Improve heat resistanceHeat stabilizersAntioxidants, rare earth compounds, magnesium-aluminum hydroxycarbonate
Enhance weather resistanceUV absorbers (UVA), HALS stabilizersUV234, UV329, UV326, UV770, UV944
Improve oxidation resistanceAntioxidants1010, 1076, 168, 626


These additives are selected based on the final application, such as automotive parts, electronics, or consumer goods, to ensure optimal performance and durability.

Is there a BPA-free PC material suitable for food-contact applications?
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Polycarbonate (PC) is synthesized from Bisphenol-A (BPA). While polymerized PC is generally safe, trace amounts of unreacted BPA may migrate under extreme conditions (e.g., high temperature or strong alkali). Technically, there is no such thing as "BPA-free PC."

If BPA-free and food-contact safety are required, we recommend alternatives such as Eastman TRITAN™ or food-grade PETG. However, TRITAN™ is expensive, has limited availability, and is prone to counterfeit issues.

We recommend our PETG HG1701, which is food-contact approved and offers excellent chemical resistance - a reliable and cost-effective alternative.

What kind of modification service can you provide regarding customers' needs?

Based on our previous cases, our modified plastics cover the following areas: color matching, flame retardant, high flow rate, high/low temperature resistance, chemical resistance, weather/UV resistance, high tensile strength, high impact strength, warp-resistance, stress impact resistance, light diffusion, and infrared transmission.

Why does the PC/ABS part crack or become brittle after 6 months when assembled using screws?

This issue is most likely caused by a chemical reaction between the anti-rust oil on the screw surface and the plastic, leading to material degradation over time.

Recommended Solutions:

  • Option 1: Pre-clean the screws
    Use an ultrasonic cleaning machine to thoroughly remove any anti-rust oil from screws before assembly. This is the most effective way to prevent chemical interactions.
  • Option 2: Enhance chemical resistance of the plastic

During the compounding process, incorporate chemical-resistant additives to improve the material’s resistance to oils and other chemicals. This option will slightly increase the cost, approximately CNY 1,000–2,000 per ton.

What do the L, a, and b values represent in color measurement?

These values refer to the CIELAB color space, commonly used in plastic color matching:
L (Lightness):* Ranges from 0 (black) to 100 (white), representing brightness.

  • a (Red-Green Axis):*
    - Positive value = red tendency
    - Negative value = green tendency
  • b (Yellow-Blue Axis):*
    - Positive value = yellow tendency
    - Negative value = blue tendency

This system helps quantify color differences precisely in plastic applications.

Can you recommend any food-grade PA66 materials?

Yes, we offer several food-grade PA66 (nylon 66) materials that are widely used in applications requiring high mechanical strength, thermal resistance, and compliance with food safety regulations.

Here are some well-known, industry-approved options:

  • BASF Ultramid A3EG3
  • DuPont Zytel 70G33L NV010

In addition to these, we work with a broad network of certified material suppliers and can help you source customized food-grade PA66 formulations based on your specific application requirements. Please contact us with your detailed specs, and we’ll recommend the most suitable solution for your project.

Do you offer flame-retardant grades? Are they halogen-free?

Yes. Suke Plastics has developed a range of flame-retardant ABS, PC, and PC/ABS materials. We offer both halogen-containing and halogen-free versions, meeting UL94 V-0 standards. Contact us for detailed product datasheets.

Can you match customized Pantone or RAL colors for plastic materials?

Yes. We offer precision color matching services based on Pantone, RAL, or customer-provided samples. Our color lab can deliver high-accuracy matching and ensure batch-to-batch consistency.

What are the common alloying combinations of resins for modification?

We often modify resin alloys by blending different base resins to achieve a balance of mechanical, thermal, and chemical properties. Below are some typical combinations:

Resin A (Key Property)Resin B (Complementary Feature)Modified Resin Application
ASA (Excellent weatherability)PMMA (Good colorability)Automotive exterior parts
ABS (Balanced properties)PMMA (Good colorability)High-gloss ABS for appliance housings
PC (Transparency, impact)PMMA (Transparency, surface hardness)Toughened transparent PC
PC (High impact resistance)ABS (Easy processing)PC/ABS blend for electronics, housings
PC (Heat resistance)PBT (Chemical resistance)PC/PBT for automotive and electrical parts
PPE (Heat resistance)HIPS (Good processability)PPO for electrical insulation
PA (Barrier to moisture/gas)PE (Low-temp sealability)Barrier materials for food packaging

These combinations are widely used in industries such as automotive, electronics, and packaging, where tailored performance and cost-effectiveness are critical.

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